1.spend ,主語是人

句型 ：sb.spend +錢/時間 +on +sth

sb.spend +錢/時間 +（ in ）+ doing sth 其中in可以省略

例句：Tom spent two hours on his homework.

Tom spent two hours ( in ) doing his homework.

My sister spent 100 dollars on her dress.

My sister spent 100 dollars ( in ) buying her dress.

2.pay ,主語是人

句型：sb.pay +錢+for sth

例句：I paid 200 yuan for this pair of shoes.

3,cost 主語是物

句型：sth cost sb some money

例句：These books cost me 150 yuan.

4,take 一般由it作形式主語

常用於句型 it takes sb some time/money to do sth.花費某人多少時間/金錢去做某事.

例句：It took me 10 minutes to walk to school from my home.

It took him 20 yuan to buy this book.